Mojo also used Blossom's curly straw, Bubbles' used cotton swab, Buttercup's smelly sweat sock,and snips of his hair to create them.
The Rowdyruff Boys love to disgust and annoy the citizens of New Townsville/Tokyo City, as well as the Powerpuff Girls Z, who they refer to as "old hags." They have no respect for anyone, including Mojo Jojo who they refer to as "Mama." They were first shown in "The Rowdyruff Boys", where Mojo had sneaked into the Professor's Lab and stole the Chemical Z along with Blossom's curly straw, Bubbles' used cotton swab, Buttercup's stinky sock.
Momoko and the Frog Prince / The Day Sedusa Disappeared!?
Miracle of Bubble Freedom, Part 1 / Miracle of Bubble Freedom, Part 2 49.
They are slightly shorter than the Powerpuff Girls Z.
They were created by Mojo Jojo after breaking into the Professor's lab and stealing a canister of Chemical Z.
They run off causing trouble throughout the city where the citizens attack Mojo, thinking he's responsible for this.